I am making a web application in ASP.NET 4.0. For some reason I need to open a web site always in full screen. It is a tedious task to open a web site in browser and then toggle to fullscreen.

Is there any way to open the browser (preferably IE9 or Google Chrome) in full screen programmatically?
Can I put some code in the Page_Load() method of my default page that toggles the browser to full screen?

I'd suggest embeding a javascript function into your ASP.NET code. use window.open() and then pass the proper parameters. I used something comparable of embedding javascript into .net with Response.Write. This example method below does window.open. Just push the proper parameters and URL, etc.